Wheel cribs and race ramps suggestions

One more dumb question- how do you get a car up high enough to put a 14" block under the tires? Is it done in steps? Do you have a better floor jack than me?
Murray,
I made mine in two sections each. About 7" for the first level, then I raise the front end to second section 14", then the back. Takes awhile, but I make sure everything is good. I don't have a pic of it sitting on the just the first level.